
#include "oled.h"
#include "stdlib.h"
#include "oledfont.h" 
#include "main.h"
//OLED的显存
//存放格式如下.
//[0]0 1 2 3 ... 127	
//[1]0 1 2 3 ... 127	
//[2]0 1 2 3 ... 127	
//[3]0 1 2 3 ... 127	
//[4]0 1 2 3 ... 127	
//[5]0 1 2 3 ... 127	
//[6]0 1 2 3 ... 127	
//[7]0 1 2 3 ... 127 			   

extern I2C_HandleTypeDef hi2c1;


#define OLED_ADD 0x78 
/**********************************************
// IIC Write Command
**********************************************/
void Write_IIC_Command(unsigned char i2c_cmd)
{
   uint8_t *cmd;
    cmd = &i2c_cmd;
    HAL_I2C_Mem_Write(&hi2c1, OLED_ADD, 0x00, I2C_MEMADD_SIZE_8BIT, cmd, 1,100);
}
/**********************************************
// IIC Write Data
**********************************************/
void Write_IIC_Data(unsigned char i2c_data)
{
    uint8_t *data;
    data = &i2c_data;
    HAL_I2C_Mem_Write(&hi2c1, OLED_ADD, 0x40, I2C_MEMADD_SIZE_8BIT, data, 1,100);
}


void OLED_WR_Byte(unsigned char dat,unsigned char cmd)
{
    if(cmd)
    { 
        Write_IIC_Data(dat);
    }
    else 
    {
        Write_IIC_Command(dat);
    }
}


/********************************************
// fill_Picture
********************************************/
void fill_picture(unsigned char fill_Data)
{
    unsigned char m,n;
    for(m=0;m<8;m++)
    {
        OLED_WR_Byte(0xb0+m,0);		//page0-page1
        OLED_WR_Byte(0x00,0);		//low column start address
        OLED_WR_Byte(0x10,0);		//high column start address
        for(n=0;n<128;n++)
            {
                OLED_WR_Byte(fill_Data,1);
            }
    }
}



//坐标设置

void OLED_Set_Pos(unsigned char x, unsigned char y) 
{ 
    OLED_WR_Byte(0xb0+y,OLED_CMD);
    OLED_WR_Byte(((x&0xf0)>>4)|0x10,OLED_CMD);
    OLED_WR_Byte((x&0x0f),OLED_CMD); 
}   
//开启OLED显示    
void OLED_Display_On(void)
{
    OLED_WR_Byte(0X8D,OLED_CMD);  //SET DCDC命令
    OLED_WR_Byte(0X14,OLED_CMD);  //DCDC ON
    OLED_WR_Byte(0XAF,OLED_CMD);  //DISPLAY ON
}
//关闭OLED显示     
void OLED_Display_Off(void)
{
    OLED_WR_Byte(0X8D,OLED_CMD);  //SET DCDC命令
    OLED_WR_Byte(0X10,OLED_CMD);  //DCDC OFF
    OLED_WR_Byte(0XAE,OLED_CMD);  //DISPLAY OFF
}
//清屏函数,清完屏,整个屏幕是黑色的!和没点亮一样!!!	  
void OLED_Clear(void)  
{  
    uint8_t i,n;		    
    for(i=0;i<8;i++)  
    {  
        OLED_WR_Byte (0xb0+i,OLED_CMD);    //设置页地址（0~7）
        OLED_WR_Byte (0x00,OLED_CMD);      //设置显示位置—列低地址
        OLED_WR_Byte (0x10,OLED_CMD);      //设置显示位置—列高地址   
        for(n=0;n<128;n++)OLED_WR_Byte(0,OLED_DATA); 
    } //更新显示
}
void OLED_On(void)  
{  
    uint8_t i,n;		    
    for(i=0;i<8;i++)  
    {  
        OLED_WR_Byte (0xb0+i,OLED_CMD);    //设置页地址（0~7）
        OLED_WR_Byte (0x00,OLED_CMD);      //设置显示位置—列低地址
        OLED_WR_Byte (0x10,OLED_CMD);      //设置显示位置—列高地址   
        for(n=0;n<128;n++)OLED_WR_Byte(1,OLED_DATA); 
    } //更新显示
}
//在指定位置显示一个字符,包括部分字符
//x:0~127
//y:0~63
//mode:0,反白显示;1,正常显示				 
//size:选择字体 16/12 
void OLED_ShowChar(uint8_t x,uint8_t y,uint8_t chr,uint8_t Char_Size)
{      	
    unsigned char c=0,i=0;	
    c=chr-' ';//得到偏移后的值			
    if(x>Max_Column-1){x=0;y=y+2;}
    if(Char_Size ==16)
    {
        OLED_Set_Pos(x,y);	
        for(i=0;i<8;i++)
            OLED_WR_Byte(F8X16[c*16+i],OLED_DATA);
        OLED_Set_Pos(x,y+1);
        for(i=0;i<8;i++)
            OLED_WR_Byte(F8X16[c*16+i+8],OLED_DATA);
    }
    else {
        OLED_Set_Pos(x,y);
        for(i=0;i<6;i++)
            OLED_WR_Byte(F6x8[c][i],OLED_DATA);
        
    }
}
//m^n函数
uint32_t oled_pow(uint8_t m,uint8_t n)
{
    uint32_t result=1;	 
    while(n--)result*=m;    
    return result;
}
//显示2个数字
//x,y :起点坐标	 
//len :数字的位数
//size:字体大小
//mode:模式	0,填充模式;1,叠加模式
//num:数值(0~4294967295);
void OLED_ShowNum(uint8_t x,uint8_t y,uint32_t num,uint8_t len,uint8_t size2)
{
    uint8_t t,temp;
    uint8_t enshow=0; 
    for(t=0;t<len;t++)
    {
        temp=(num/oled_pow(10,len-t-1))%10;
        if(enshow==0&&t<(len-1))
        {
            if(temp==0)
            {
                OLED_ShowChar(x+(size2/2)*t,y,' ',size2);
                continue;
            }else enshow=1; 
             
        }
    OLED_ShowChar(x+(size2/2)*t,y,temp+'0',size2); 
    }
} 
//显示一个字符号串
void OLED_ShowString(uint8_t x,uint8_t y,uint8_t *chr,uint8_t Char_Size)
{
	unsigned char j=0;
	while (chr[j]!='\0')
	{		OLED_ShowChar(x,y,chr[j],Char_Size);
			x+=8;
		if(x>120){x=0;y+=2;}
			j++;
	}
}
//显示汉字
void OLED_ShowCHinese(uint8_t x,uint8_t y,uint8_t no)
{  
    uint8_t t,adder=0;
    OLED_Set_Pos(x,y);
    for(t=0;t<16;t++)
    {
        OLED_WR_Byte(Hzk[2*no][t],OLED_DATA);
        adder+=1;
    }
    OLED_Set_Pos(x,y+1);
    for(t=0;t<16;t++)
    {
        OLED_WR_Byte(Hzk[2*no+1][t],OLED_DATA);
        adder+=1;
    }
}
/***********功能描述：显示显示BMP图片128×64起始点坐标(x,y),x的范围0～127，y为页的范围0～7*****************/
void OLED_DrawBMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[])
{ 	
 unsigned int j=0;
 unsigned char x,y;
  
  if(y1%8==0) y=y1/8;      
  else y=y1/8+1;
    for(y=y0;y<y1;y++)
    {
        OLED_Set_Pos(x0,y);
        for(x=x0;x<x1;x++)
            {      
                OLED_WR_Byte(BMP[j++],OLED_DATA);
            }
    }
} 

//初始化SSD1306					    
void OLED_Init(void)
{ 
    OLED_WR_Byte(0xAE,OLED_CMD);//--display off
    OLED_WR_Byte(0x00,OLED_CMD);//---set low column address
    OLED_WR_Byte(0x10,OLED_CMD);//---set high column address
    OLED_WR_Byte(0x40,OLED_CMD);//--set start line address  
    OLED_WR_Byte(0xB0,OLED_CMD);//--set page address
    OLED_WR_Byte(0x81,OLED_CMD); // contract control
    OLED_WR_Byte(0xFF,OLED_CMD);//--128   
    OLED_WR_Byte(0xA1,OLED_CMD);//set segment remap 
    OLED_WR_Byte(0xA6,OLED_CMD);//--normal / reverse
    OLED_WR_Byte(0xA8,OLED_CMD);//--set multiplex ratio(1 to 64)
    OLED_WR_Byte(0x3F,OLED_CMD);//--1/32 duty
    OLED_WR_Byte(0xC8,OLED_CMD);//Com scan direction
    OLED_WR_Byte(0xD3,OLED_CMD);//-set display offset
    OLED_WR_Byte(0x00,OLED_CMD);//

    OLED_WR_Byte(0xD5,OLED_CMD);//set osc division
    OLED_WR_Byte(0x80,OLED_CMD);//

    OLED_WR_Byte(0xD8,OLED_CMD);//set area color mode off
    OLED_WR_Byte(0x05,OLED_CMD);//

    OLED_WR_Byte(0xD9,OLED_CMD);//Set Pre-Charge Period
    OLED_WR_Byte(0xF1,OLED_CMD);//

    OLED_WR_Byte(0xDA,OLED_CMD);//set com pin configuartion
    OLED_WR_Byte(0x12,OLED_CMD);//

    OLED_WR_Byte(0xDB,OLED_CMD);//set Vcomh
    OLED_WR_Byte(0x30,OLED_CMD);//

    OLED_WR_Byte(0x8D,OLED_CMD);//set charge pump enable
    OLED_WR_Byte(0x14,OLED_CMD);//

    OLED_WR_Byte(0xAF,OLED_CMD);//--turn on oled panel
}  

